baber/WOPTO huggingface dataset:
Patent GB-402786-A (GB)
Title: Improvements in or relating to abrasive wheels
IPC: B24D5/06
Filed: 1932-06-07
Abstract: 402,786. Grinding-wheels. REYNOLDS, H., 303, Western Bank, Sheffield. June 7, 1932, No. 16023. [Class 60.] A grinding-wheel comprises a base, consisting of a hub 10 and a rim 11 connected by spokes 12 and webs 13 slotted at 14 between the spokes, and abrasive blocks, mounted on the rim and held in position by plates 19. The blocks have end faces 16, engaged by the plates 19, diverging from the peripheral grinding-surface 15, and these faces may be of conical form, the end faces of the rim 11 and spokes also being of conical form ; or the faces may be flat, the inner faces of the plates 19 being shaped correspondingly. The plates 19 are of sector shape and are held in position by bolts 20 passing through and adjustable radially in, the slots 14, so that as the abrasive blocks wear, the plates may be moved radially inwards. The wheel base may have thereon ribs 22 engaging grooves in the plates 19 to prevent outward creeping of the plates ; the plates may be slotted and held by studs fixed in the base. The contacting faces 18 of the abrasive blocks may be in radial planes of the wheel or may be inclined to the axis of the wheel; or the faces may be of helical form.
Patent GB-439120-A (GB)
Title: Improvements in and relating to conveyors for conveying tin, steel or other plates from the feed rolls to the delivery rolls in cold rolling
IPC: B21B39/04
Filed: 1934-05-29
Abstract: 439,120. Endless-belt conveyers. PRICE, C. E., Gwynfe House, Llangadock, Carmarthenshire. May 29, 1934, No. 16033. [Class 78 (i)] [See also Group XXII] The frame 18 carrying an endless conveyer 17 is secured to brackets 12 carried by a cover member 10 rotatably mounted on a stationary base 11 so that the conveyer and associated frame and support can be swung bodily in a horizontal plane so as to give access to the space between the roll stands of a cold rolling plant for tin, steel or other plates. If more space is required the conveyer and its support can be removed from the base 11 and the gap 27 in the floor in which the latter is bedded can be closed by a cover plate. The ends 23 of the frame are pivoted to the main parts at 24 so that they may be swung up as shown in dotted lines, rollers 26 being provided to tension the conveyer when so swung up. The drive to the conveyer is from a shaft 6, through speed gearing 15, 16 and belt gearing 22. The shaft 14 carrying the gear wheel 16 is mounted in eccentric bearings so that it can be raised, by rotating a lever 28, to disconnect the drive. In a modification the gear-wheel 16 is slidably mounted on the shaft 14 and is caused to slide to disconnect the drive, and a windlass is provided for raising the ends 23.
Patent GB-1001299-A (GB)
Title: Improvements in heat exchanger apparatus
Inventor: HILTON CHARLES HERBERT
IPC: F28F1/02
Filed: 1963-04-24
Abstract: 1,001,299. Finned tube heat exchangers. HUNT & MOSCROP Ltd. April 23, 1964 [April 24, 1963], No. 16072/63. Heading F4S. [Also in Division B3] A substantially oval heat exchange tube has metal strip coiled on edge therearound to form a helical fin thereon. Copper strip B, crimped at one edge by means d<SP>3</SP>, is applied to oval-sectioned tube A by a wheel d. The tube A is rotated and moved longitudinally while a carriage D, carrying the means d<SP>3</SP> and wheel d, is raised and lowered by cams d<SP>2</SP>. The end of the strip B is brazed or soldered to the tube A adjacent each end. The finned tubes A are mounted in units with smaller diameter parts of the fins touching, the upper ends of the tubes being mounted in a header a<SP>1</SP> and the lower ends in a drain header a<SP>3</SP>.
Patent GB-315694-A (GB)
Title: Improvements in or relating to winding apparatus for artificial silk spinning machines
IPC: B65H63/08
Filed: 1929-05-24
Abstract: 315,694. Kohorn, Oscar, Freiherr von, (trading as Kohorn & Co., 0.), and Lehner, A. July 16, 1928, [Convention date]. No Patent granted (Sealing fee not paid). Winding-machines.-In winding threads on to bobbins and particularly in machines for spinning artificial silk, the thread 1, Figs. 1 and 2, is moved from a completed bobbin 2 to a fresh bobbin 5 by a hook 29 which is actuated from the measuring devices 7, 7<1>. The hooks 29 are secured to rods 21 which are carried in a forked frame 17 adapted to be moved across the bobbins by a pin 16 engaging the groove 22 of a cam-drum 14 on a shaft 13 which is normally held stationary by engagement of one of two levers 10, 10<1> with a stop 12. Measuring stops 8, 8<1> are set as desired on the discs 7, 7<1> and are adapted to move a rod 9 carrying the levers 10, 10<1> whereby the shaft 13 is released. The shaft 13 also carries a cam disc 15 engaging rollers 23 on levers 24 pivoted at 25 and through which the rods 21 are rotated. On release of the shaft 13 the rods 21 are rotated to lower the hook 29 and the thread engaged therein, the hook is then raised and the rods 21 moved sidewavs so that the thread is over the empty bobbin upon which it commences to wind automatically. The two positions of the hook 29 for a forward and backward transfer of the thread are shown at a, a<1>; b, b'.
Patent GB-522090-A (GB)
Title: Improvements in or relating to means for protecting the journals of rolls
IPC: B21B31/07
Filed: 1939-06-02
Abstract: 522,090. Bearing covers. DORTMUND HOERDER HUTTENVEREIN AKT.-GES. June 2, 1959, No. 16246. Convention date, July 11, 1938. [Class 12 (i)] To prevent slag and scale from entering the bearings of rolls, a casing 3 is mounted on the journal 4 of the lower roll 2, the casing having an annular projection 6 engaging a groove 7 formed in the collar of the lower roll. Another groove 8 in the collar collects slag and scale particles and discharges them.
Patent GB-655125-A (GB)
Title: Improvements in small arms
Inventor: HALE ARTHUR CORBYN
IPC: F41C23/16
Filed: 1948-08-18
Abstract: 655,125. Smallarms. BIRMINGHAM SMALL ARMS CO., Ltd. Aug. 18, 1948, No. 16378. [Class 119] To prevent vibration of the barrel during firing, the barrel 10 is supported by a longitudinal metallic beam 14 integral with or rigidly attached to the action casing 11, Fig. 3, or fastened to the rear of the barrel, Fig. 9, the barrel being spaced from the beam but attached to it forwardly by screw or like means for stressing the barrel transversely. In the form shown in Fig. 3, the rear end of a channelshaped beam 14 is welded to the action casing 1 and the front end carries a support 18 for the barrel fitted with screws 19, Fig. 4, which with a screw 17 on the beam serve to stress the barrel transversely. An adjustable fore-end grip 13 is fitted to the beam. Fig. 9 shows the beam 14 attached at the rear to the barrel by screw 35 and packing piece 37 and at the front to the barrel by screw 42 and sleeve 40. In a modification, (Fig. 11, not shown) the beam may be in the form of a sleeve surrounding the barrel. According to the Provisional Specification, resilient blocks may be arranged between the barrel and beam at the points where the stress is applied to the barrel.
Patent GB-811372-A (GB)
Title: Improvements in or relating to electric oscillators
Inventor: WILSON BERNARD
IPC: H03C3/10
Filed: 1956-05-28
Abstract: 811,372. Frequency modulation; valve oscillator circuits. GENERAL ELECTRIC CO. Ltd. May 27, 1957 [May 28, 1956],No. 16485/56. Classes 40 (5) and 40 (6). A phase-shift oscillator comprises a grounded cathode valve 1 and two or more grounded grid valves 2, 3, all connected in series, with R-C connection 14, 15, 16 between the last and first valves, the frequency being determined by the phase shifts due to the complex input impedances of the grounded grid valves 2, 3 and their mutual conductances and the quadrature phase shift between cathode and anode of valve 3, due to the anode load capacitor 15. The grids of valves 2, 3 are earthed to A.C. potential by capacitors 8, 9 at D.C. voltages determined by a voltage divider 13, 12, 11. Frequency modulation or A.F.C. stabilization of the oscillator is obtained by varying the current through all or at least one of the grounded grid stages to vary the mutual conductances, e.g. by a voltage applied to the grid of valve 1 or a valve 22 shunting the valve 1.
Patent GB-926514-A (GB)
Title: 4:4-diamino-1:1 - dianthraquinonyl compounds and process for their manufacture
IPC: C09B1/22
Filed: 1961-05-05
Abstract: The invention comprises 4:41-diamino-6:61dichloro-, -7:71-dichloro- and -6:61:7:71their 3:31-disulphonic acids and 4:41-diamino-1:11- di-anthraquinonyl-3:31:7:71-tetrasulphonic acid.  The invention further comprises a process for making 4:41-diamino-1:11-dianthraquinonyl-3:31 -disulphonic acids by heating a 1-amino-4-halogen-anthraquinone-2-sulphonic acid, which may be further substituted for example by halogen or nitro, in an acid medium with metallic copper or a copper oxide.  If desired the sulphonic acid groups in the product may be exchanged for hydrogen atoms by heating in a mineral acid such as aqueous sulphuric acid or sodium bisulphate solution or for bromine by heating with bromine in aqueous hydrobromic acid.  The acid medium used in the condensation reaction may be water, alcohol, acetone, glycol monoethyl ether, dimethyl formamide or dioxane to which has been added sulphuric, hydrochloric, phosphoric or trichloroacetic acid, potassium hydrogen sulphate, copper sulphate, aluminium sulphate, copper nitrate or benzene, p-toluene or naphthalene sulphonic acids.  Examples are given.
Patent GB-1448889-A (GB)
Title: Receptor sheet
IPC: B05D5/04
Filed: 1974-04-16
Abstract: 1448889 Coated drawing material OCEVAN DER GRINTEN NV 16 April 1974 [16 April 1973] 16582/74 Heading B2E A drawing material, which is receptive to both pencil and ink, comprises a flexible, preferably transparent, support provided on at least one surface with a first layer containing a film-forming polymer and a toothing agent and a second layer containing 70-94.5% by weight of polyvinyl acetate having a glass transition temperature of at least 29‹C (i.e. the polyvinyl acetate contains little or no plasticiser), 5-20% of a polymer predominantly formed of monomer units which bear hydroxyl or carboxyl groups, and 0.5-10% of a hydrophobic agent. The support may comprise transparentised paper, linen, glass tissues, polyester reinforced with glass fibre, or polyamide, polypropylene, polycarbonate or polyethylene terephthalate film. The surface of the support may be pre-treated with a halogenated organic compound or by adhesive application. The filmforming polymer of the first layer may be polyvinyl formed, cellulose ester, an acrylic polymer, urea-formaldehyde resin, alkyd resin or epoxy resin and the toothing agent may be silica, diatomaceous earth, glass powder, TiO 2 , ZnO or kaolin. The second layer may contain polyvinyl alcohol, hydroxyethyl cellulose, an interpolymer of styrene, hexylacrylate, acrylonitrile and methacrylic acid or a carboxylated copolymer of styrene or ethylene and maleic anhydride as the additional polymer and a wax emulsion, siloxane, zirconium-containing paraffin emulsion or a Werner complex of a chromic salt and an aliphatic fatty acid (especially CrCl 3 -stearic acid) as hydrophobic agent.
Patent GB-982685-A (GB)
Title: Improvements in or relating to sliding-clasp fasteners
IPC: A44B19/40
Filed: 1961-05-08
Abstract: 982,685. Sliding clasp fasteners. W. E. HEILMANN. May 8, 1961 [May 9, 1960], No. 16615/61. Heading E2S. [Also in Division D1] A sliding clasp fastener comprises a pair of coil members 1 made of plastics material each secured to a stringer tape 4 and adapted to be interengaged by means of a slider, in which a slider guide 3 of plastics material which is pierceable by a sewing needle is arranged alongside each coil member opposite the coupling side thereof, the slider guide and the coil member being sewn to the stringer tape by a chain stitch seam made with two or more needles so that one row of upper thread stitches of a first thread passes through the stringer tape and the slider guide and extends longitudinally of the slider guide while another row of upper thread stitches of another thread passes through the stringer tape and the coil member and extends longitudinally of the coil member, the lower thread loops of the seam being coupled with the upper threads by loop sections which substantially cover the top of the slider guide and part of the top of the coil member remote from the stringer tape, leaving exposed the coupling side of the coil member and also the side face of the slider guide remote from the coupling side, said side face forming a guide surface for the slider guide. In the construction shown in Fig. 1 the turns of the coil member are maintained equally spaced before sewing by a thread 2 wound round each turn and the slider guide is of angular cross-sectional shape to cover the thread 2. In a modification instead of using the slider guide shown, a cable made of threads of thermoplastic material is substituted. In a further modification instead of using a thread 2 the coil member 1 is provided with a core which maintains the spacing of the turns and in this case the slider guide is of rectangular cross-sectional shape. In a further construction individual loops of the coil member are integrally connected by a longitudinally extending strip and the slider guide is again of rectangular cross-sectional shape. Instead of using a two needle three thread chain stitch seam as shown in Fig. 1 a three needle four thread chain stitch seam can be used, one of the upper threads piercing the slider guide and the other two upper threads passing between the turns of the coil member. The single lower thread (which is shown uppermost in Fig. 1) in each construction engages all the upper threads.
Patent GB-698882-A (GB)
Title: Improvements in or relating to feed water regulators for controlling the water levelin steam boilers
IPC: F22D5/14
Filed: 1950-07-04
Abstract: 698,882. Fluid-pressure servomotor-control systems. HILLIER, H., and WEIR, Ltd., G. & J. Sept. 27, 1951 [July 4, 1950], No. 16626/50. Class 135. In a feed-water regulator for controlling the water level in a boiler in which a feed valve is actuated by a feed-water pressure intermediate the inlet and boiler pressures determined by primary and secondary control of leakage water from the feed valve in which the controls are sensitive respectively to vapour flow and water level variations, the secondary control is effected by a needle valve controlled by the pressure in a closed vapour generator system varying with the water level. Feed water at 4 acts via a passage 15 in the feed valve 1 on an upper valve piston 8 which is half the area of a lower valve piston 6 containing a passage 16 through which the flow of feed water to a control chamber 11 is regulated by a manuallyadjustable needle valve 18. The flow of water from chamber 11 via pipes 42, 44, to the boiler is controlled in parallel by two needle valves 29, 56. The former needle valve is actuated by a bellows 21 successively loaded by springs 36, 35, 37 and responsive to the pressure drop across the vapouroutlet superheater 32, so that increased boiler load closes the valve 29 and allows pressure to build up in chamber 11 to open the feed valve. The latter needle valve is actuated by a diaphragm 53 moved by the pressure of e.g. distilled water and vapour heated in a tube 50 surrounding a pipe 45 connected to the boiler water and steam spaces by pipes 47, 46, respectively. Decrease in water level increases the flow of heat into the vapour generator 50 which increases the vapour pressure in pipe 51 to close the valve 56 and allow presure to build up in the chamber 11 to open the feed valve. In a modification each control valve is actuated by a diaphragm and positioned in one casing. In a further modification the control chamber 11 is placed above the upper valve piston which is open to the inlet through the manually adjustable needle valve in a feed valve passage opening into a guide which replaces the lower piston, so that, contrary to the first embodiment, the needle valve opens when the feed valve opens. The water level may be indicated by a calibrated pressure gauge or by a pointer operated by a diaphragm connected to the pipe 51. Specification 628,175 is referred to.
Patent GB-195308-A (GB)
Title: Improvements in or relating to vulcanising apparatus
IPC: B29C35/00
Filed: 1922-06-15
Abstract: 195,308. Gessler, A. de. June 15, 1022. Vulcanizing by electricity; pressing-devices for. -In an electrically-heated tyre vulcanizing-apparatus, all the electric fittings, including the terminals 7, a fuse 8, and an electromagnet serving by the position of its armature 17 to indicate whether current is flowing, are sunk in the heating-box so as to leave no projecting parts. The screw 23 for tensioning the chain may be attached to the cover of the heating-box, so as to serve as a carrying-handle, by passing pins on it through slots 25 and engaging them in grooves on the inner surface of the cover. The heating-box 1 has a cavity 2 at the bottom adapted to be held against a tyre cover by a chain or strap 22, a support 20 is provided having an upper surface adapted to fit into the cavity of the heating-box and arranged so that a piece of work can be clamped between the members 1, 20 by means of the chain. The bottom of the heating-box may consist of an interchangeable piece 3 to adapt it to tyre covers of various shapes. Intersecting grooves 29, 30 in the base enable the chain to be used in two positions.
Patent GB-168705-A (GB)
Title: Improvements in connection with the production of motive power
IPC: F02G5/04
Filed: 1920-06-22
Abstract: 168,705. Wilkinson, G. June 22, 1920. Feed-water, heating. - In a mixed internalcombustion engine and steam engine or turbine plant the cooling water of the internal-combustion engine is further heated by the exhaust gases and used as boiler feed water. As shown in the Figure, the cooling water is discharged into a tank B from which it is delivered by a feed pump D to a calorifier E heated by the exhaust gases and through a check valve G to the boiler. A ball cock C supplies water to the tank if the supply of cooling water fails.
Patent GB-707842-A (GB)
Title: Means for creating current impulses
IPC: F42D1/045
Filed: 1952-07-04
Abstract: 707,842. Oscillating generators. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. July 4, 1952 [July 13, 1951], No. 16830/52. Class 35 [Also in Group XXIV] An oscillating generator for producing current impulses comprises an armature 3 which is tiltable so that it may alternatively bridge poles N<SP>1</SP>, S<SP>11</SP> (as shown), or N<SP>11</SP>, S<SP>1</SP>, thus reversing the direction of flux through coil 4. The motion from one portion to the other is derived from a pivoted member 9 having a ridge 11 engaged on alternate sides by a pivoted pressure member 12. In a modified form, the tiltable armature is replaced by a permanent magnet. Specification 583,915 is referred to.
Patent GB-293562-A (GB)
Title: Improvements in paper holders for photographic apparatus
IPC: G03B27/58
Filed: 1927-06-24
Abstract: 293,562. Williamson, C. M., and Williamson, S. June 24, 1927. Enlarging and reducing.-The support for the sensitive paper is so mounted that it is prevented from rotation about the optical axis of the apparatus, but may be tilted about an axis which lies in the surface of the support and is rotatable about the optical axis. In the form shown in section in Fig. 2, the paper support 2 is rotatably mounted at 4 in a ring frame 3 trunnioned at 6 in a casting 7 rotatably mounted on a, base plate 9 by means of a pin 8 in alignment with the optical axis of the apparatus. Telescopic adjusting mechanism 10 permits tilting of the support 2 about the trunnion axis 6, which lies in the surface of the support. Rotation of the support 2 about the optical axis, when the ring frame is rotated about the pin 8, it is presented by the engagement of a pin 11 on the support with a slot 12 in a plate 13 fixed on the base plate. In a modification, the ring frame is replaced by an undercarriage having on its underside curved ribs engaging curved guides mounted on a casting rotatably mounted on the pivot pin 8, and the tilting of the support is effected by displacing the undercarriage so that its curved ribs slide in the curved guides.
Patent GB-1004696-A (GB)
Title: Improvements in or relating to percussion drilling apparatus
IPC: E21B4/14
Filed: 1961-09-13
Abstract: 1,004,696. Boring earth, &c. MISSION MANUFACTURING CO. Sept. 13, 1961 [Dec. 5, 1960], No, 16885/65. Divided out of 1,004,694. Heading E1F. [Also in Division B4] In a down-the-hole percussive drill having a hollow casing 116 and a hammer piston 166, means arranged to expedite the reversal of motion of the piston comprises a pressure chamber 163 confined in the rearward end of the casing by a partition 162, and means 169, 143, 145 arranged to seal the chamber at the end of the rearward movement of the piston to increase fluid pressure resisting the movement. After the piston end 169 passes the exhaust port 157 during the rearward stroke, the air in chambers 175, 165, 163 is compressed, but after the end 169 of the piston passes the ports 143, 145 only the air in the chambers 175, 165 is compressed.
Patent GB-779198-A (GB)
Title: Improvements in domestic solid fuel burning appliances
Inventor: SILVER ROBERT SIMPSON
IPC: F24B1/19
Filed: 1954-06-09
Abstract: 779,198. Air supply for combustion. FEDERATED FOUNDRIES, Ltd. May 26, 1955 [June 9, 1954], No. 16906/54. Class 126. A fireplace has a backwardly sloping fire-brick back with a secondary air passage behind, and forwardly sloping upper fireback, so that the fuel bed is of less depth from front to back at the grate than at the outlet of the secondary duct and gases evolved from the fuel resting against the lower part of the fireback are burnt in the secondary air. A fire-brick back 3 sloping upwardly away from the grate 1 forms the front wall of a secondary air passage 4 opening into a slot extending the full width of the top of the back 3. A fire resisting back wall 6 slopes forwardly above the slot at an angle of less than 60 degrees to the horizontal. Primary and secondary air are taken from below the floor through a duct 7, to a damper-controlled passage 8 leading to the ashpit and a second damper-controlled passage 9 leading to the secondary air passage 4 behind the fireback 3. The dampers 13, 14 are independently controlled by a lever at the top of a tube 13a extending through the hearth and a handle at the top of a rod 15 passing through the tube 13a respectively.
Patent GB-568555-A (GB)
Title: Improvements in or relating to pocket knives and like implements
IPC: B26B1/02
Filed: 1943-10-15
Abstract: 568,555. Pocket knife &c. handles. HOWEY, A. A. Oct. 15, 1943, No. 16930. [Class 30] In a pocket knife &c. such as described in Specification 329,143, [Class 30], in which the tang 10 of the blade or tool 11 is pivoted about an axis 12 between the arms of a U-shaped handle 13 and in which a U-shaped member 15 is pivoted on an axis 14 in the tang transverse to the axis 12 and lies within the handle 13 when the knife is closed, Fig. 2, and surrounds it when the knife is open, Fig. 4, the outer face of the connecting part 16 of the member 15 and the inner face of the connecting part of the handle 13 are curved concentrically with the axis 12 and the outer face of the connecting part of the handle and the inner face of the part 16 are curved concentrically with the axis 14. The distance between the axes 12, 14 is also approximately equal to half the combined thickness of the connecting parts so that the surfaces lie closely together in both the open and closed positions of the knife. Undesired movement of the parts may be prevented by the provision of a projection 19 on the outer face of each connecting part adapted to engage a depression 18 in the inner face of the other part.